Copyright>        OpenRadioss
Copyright>        Copyright (C) 1986-2024 Altair Engineering Inc.
Copyright>
Copyright>        This program is free software: you can redistribute it and/or modify
Copyright>        it under the terms of the GNU Affero General Public License as published by
Copyright>        the Free Software Foundation, either version 3 of the License, or
Copyright>        (at your option) any later version.
Copyright>
Copyright>        This program is distributed in the hope that it will be useful,
Copyright>        but WITHOUT ANY WARRANTY; without even the implied warranty of
Copyright>        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Copyright>        GNU Affero General Public License for more details.
Copyright>
Copyright>        You should have received a copy of the GNU Affero General Public License
Copyright>        along with this program.  If not, see <https://www.gnu.org/licenses/>.
Copyright>
Copyright>
Copyright>        Commercial Alternative: Altair Radioss Software
Copyright>
Copyright>        As an alternative to this open-source version, Altair also offers Altair Radioss
Copyright>        software under a commercial license.  Contact Altair to discuss further if the
Copyright>        commercial version may interest you: https://www.altair.com/radioss/.
C
Chd|====================================================================
Chd|  SPMD_CRK_IDMAX                source/mpi/anim/spmd_crk_idmax.F
Chd|-- called by -----------
Chd|        GENANI                        source/output/anim/generate/genani.F
Chd|-- calls ---------------
Chd|====================================================================
      SUBROUTINE SPMD_CRK_IDMAX(IDMAX,ITAB)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------------------------
C   M e s s a g e   P a s s i n g
C-----------------------------------------------
#ifdef MPI
#include "mpif.h"
#endif
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "com01_c.inc"
#include      "com04_c.inc"
#include      "task_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER IDMAX,ITAB(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
#ifdef MPI
      INTEGER IDMAXL, I, ITAG, MSGOFF, IDMAXP(NSPMD-1), 
     .        REQ(NSPMD-1), IERR, STAT(MPI_STATUS_SIZE,NSPMD-1)
C-----------------------------------------------
      DATA MSGOFF/7063/
C-----------------------------------------------
      IDMAXL=0
      DO I=1,NUMNOD
         IDMAXL=MAX(IDMAXL,ITAB(I))
      ENDDO
      IF (ISPMD==0) THEN
         DO I=1,NSPMD-1
            ITAG=MSGOFF
            CALL MPI_IRECV(IDMAXP(I), 1, MPI_INTEGER, IT_SPMD(I+1),
     .                     ITAG, MPI_COMM_WORLD, REQ(I), IERR)
         ENDDO
         CALL MPI_WAITALL(NSPMD-1, REQ, STAT, IERR)
C
         IDMAX=IDMAXL
         DO I=1,NSPMD-1
            IDMAX=MAX(IDMAX,IDMAXP(I))
         ENDDO
      ELSE
         ITAG=MSGOFF
         CALL MPI_ISEND(IDMAXL, 1, MPI_INTEGER, IT_SPMD(1),
     .                  ITAG, MPI_COMM_WORLD, REQ, IERR)
         CALL MPI_WAIT(REQ, STAT, IERR)
      ENDIF
C
#endif
      RETURN
      END
